Copper-Mediated Synthesis of 1,2,3-Triazoles from<i>N</i>-Tosylhydrazones and Anilines
作者:Zhengkai Chen、Qiangqiang Yan、Zhanxiang Liu、Yiming Xu、Yuhong Zhang
DOI:10.1002/anie.201306416
日期:2013.12.9
NNNifty targets: In a straightforward copper‐mediated synthesis of 1,4‐disubstituted and 1,4,5‐trisubstituted 1,2,3‐triazoles, readily available aniline and N‐tosylhydrazone substrates underwent cyclization through CN and NN bond formation (see scheme; Piv=pivaloyl, Ts=p‐toluenesulfonyl). This method enables the preparation of 1,2,3‐triazoles with high efficiency under mild conditions without the
NNNifty目标:在1,4-二取代和1,4,5-三取代的1,2,3-三唑,容易获得的苯胺和一个简单的铜介导的合成Ñ -tosylhydrazone基板至C后行环化 N和N Ñ键的形成(参见方案; Piv =新戊酰基,Ts =对甲苯磺酰基)。该方法可以在温和条件下高效地制备1,2,3-三唑,而无需使用叠氮化物。